Birds, being dinosaurs and having the size they have, already are lifesize dinosaurs, no DNA editig required.
As to the question you probably meant to ask, no editing the DNA of a living organism to match the unknown DNA of an extinct organism it separated from a 100 Million years ago is impossible.
And here we see the importance of commas, why you shouldn't separate the negative from the verb by a mile and the difference between "no editing ... is impossible" - all edits are possible and "no, editing ... is impossible" - the edits are impossible.
That's a great point; hadn't considered that myself before. I guess you could construct a chamber with the proper atmosphere, though, without too much difficulty. At the very least, it seems like an easier problem to solve than the whole bringing a dinosaur to life thing anyway.
That what first crossed my mind (because of theory of Polymorphism that I'm developing) , but maybe not because genetic mutation over time may have damaged the necessary DNA. Possibliy you can switch some gene and get deformed lifesize dinosaur.
